Sites

library(tidyverse)
library(cowplot)
library(maps)
library(ggforce)
library(viridis)

studies <- read_csv("../data/studies_gsheet.csv")
sites <- read_csv("../data/sites_gsheet.csv")

df <- studies %>% 
  group_by(site) %>% 
  summarise(Nstudies = n_distinct(studyID)) %>% 
  left_join(sites)

Joining, by = "site"

world <- map("world", plot = FALSE, fill = TRUE) %>% fortify()

ggsave("map.pdf", width = 20, height = 10, scale = 2)

m <- ggplot(df, aes(x = long, y = lat)) +
  geom_polygon(data = world, aes(group = group), fill = "grey90") +
  geom_point(aes(size = Nstudies, fill = Nstudies), shape = 21, alpha = .8) +
  scale_size_area("Number of\nStudies", max_size = 15) +
  scale_fill_viridis_c("Number of\nStudies") +
  theme_map() +
  guides(size = "none")

legend <- get_legend(m)

Removed 2 rows containing missing values (geom_point).

mx <- m +
  annotate("rect", ymin = c(24, 31, 24), ymax = c(46, 61, 50), xmin = c(124, -12, -130), 
           xmax = c(146, 32, -64), size = .5, col = "grey", fill = NA) + 
  coord_fixed(1.3, ylim = c(-55, 83.59961)) +
  theme(legend.position = "none")

Zoom in on sections

# japan
m1 <- m + 
  geom_polygon(data = world, aes(group = group), col = "black", fill = "grey90", lwd = .2) +
  geom_point(aes(size = Nstudies, fill = Nstudies), shape = 21, alpha = .8) +
  coord_fixed(1.3, ylim = c(25, 45), xlim = c(125, 145)) +
  theme(legend.position = "none") +
  panel_border(color = "grey", size = .5)

# europe
m2 <- m + 
  geom_polygon(data = world, aes(group = group), col = "black", fill = "grey90", lwd = .2) +
  geom_point(aes(size = Nstudies, fill = Nstudies), shape = 21, alpha = .8) +
  coord_fixed(1.3, ylim = c(32, 60), xlim = c(-10, 30)) +
  theme(legend.position = "none") +
  panel_border(color = "grey", size = .5)

# contiguous us
usa = map("state", plot = FALSE, fill = TRUE) %>% fortify() # "usa"

m3 <- m + 
  geom_polygon(data = world, aes(group = group), col = "black", fill = "grey90", lwd = .2) +
  geom_polygon(data = usa, aes(group = group), col = "black", fill = "grey90", lwd = .2) +
  geom_point(aes(size = Nstudies, fill = Nstudies), shape = 21, alpha = .8) +
  coord_fixed(1.3, ylim = c(25, 49), xlim = c(-127, -67)) +
  theme(legend.position = "none") +
  panel_border(color = "grey", size = .5)

bottom_row <- plot_grid(m3, m2, m1, legend, nrow = 1, rel_widths = c(2, 1.18, .85, .5))

Removed 2 rows containing missing values (geom_point).Removed 2 rows containing missing values (geom_point).Removed 2 rows containing missing values (geom_point).Removed 2 rows containing missing values (geom_point).Removed 2 rows containing missing values (geom_point).Removed 2 rows containing missing values (geom_point).

plot_grid(mx, bottom_row, ncol = 1, rel_heights = c(2.4, 1)) +
  theme(plot.margin = unit(c(.5, .5, 1.5, .5), "cm"))

Removed 2 rows containing missing values (geom_point).

ggsave("map_insets.pdf", width = 8, height = 5.5, scale = 2)

---

Session Info

sessionInfo()

R version 3.6.1 (2019-07-05)
Platform: x86_64-apple-darwin15.6.0 (64-bit)
Running under: macOS Mojave 10.14.5

Matrix products: default
BLAS:   /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
LAPACK: /Library/Frameworks/R.framework/Versions/3.6/Resources/lib/libRlapack.dylib

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
 [1] viridis_0.5.1     viridisLite_0.3.0 ggforce_0.3.1     maps_3.3.0        cowplot_1.0.0    
 [6] forcats_0.4.0     stringr_1.4.0     dplyr_0.8.3       purrr_0.3.2       readr_1.3.1      
[11] tidyr_1.0.0       tibble_2.1.3      ggplot2_3.2.1     tidyverse_1.2.1  

loaded via a namespace (and not attached):
 [1] tidyselect_0.2.5 xfun_0.10        haven_2.1.1      lattice_0.20-38  colorspace_1.4-1
 [6] vctrs_0.2.0      generics_0.0.2   rlang_0.4.0      pillar_1.4.2     glue_1.3.1      
[11] withr_2.1.2      tweenr_1.0.1     modelr_0.1.5     readxl_1.3.1     lifecycle_0.1.0 
[16] munsell_0.5.0    gtable_0.3.0     cellranger_1.1.0 rvest_0.3.4      labeling_0.3    
[21] knitr_1.25       broom_0.5.2      Rcpp_1.0.2       scales_1.0.0     backports_1.1.5 
[26] jsonlite_1.6     farver_1.1.0     gridExtra_2.3    digest_0.6.21    hms_0.5.1       
[31] stringi_1.4.3    polyclip_1.10-0  grid_3.6.1       cli_1.1.0        tools_3.6.1     
[36] magrittr_1.5     lazyeval_0.2.2   crayon_1.3.4     pkgconfig_2.0.3  zeallot_0.1.0   
[41] MASS_7.3-51.4    xml2_1.2.2       lubridate_1.7.4  assertthat_0.2.1 httr_1.4.1      
[46] rstudioapi_0.10  R6_2.4.0         nlme_3.1-141     compiler_3.6.1